Sökning: "M Danielsson"

Visar resultat 1 - 5 av 16 avhandlingar innehållade orden M Danielsson.

  1. 1. A Central Rapidity Straw Tracker and Measurements on Cryogenic Components for the Large Hadron Collider

    Författare :Hans Danielsson; Partikel- och kärnfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; physical instrumentation; tracker; transsition radiation; LHC; cryogenics; superconducting; Metrology; helium; Metrologi; fysisk instrumentering; Fysicumarkivet A:1997:Danielsson; Fysicumarkivet A:1997:Danielsson;

    Sammanfattning : This thesis is divided into two parts in which two different aspects of the Large Hadron Collider (LHC) Project are discussed. The first part describes the design of a transition radiation tracker (TRT) for the inner detector in ATLAS. In particular, the barrel part was studied in detail. The barrel TRT consists of 52 544 1. LÄS MER

  3. 2. Rare pediatric movement disorders : clinical aspects of genotype, phenotype, and assessment

    Författare :Annika Danielsson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Pediatric movement disorders are defined by an impaired ability to initiate and control movements. Dystonia, one of these disorders, may cause a life-long severe motor disability. Pharmacological treatment is often insufficient, but deep brain stimulation (DBS) has turned out to be effective for some dystonia subtypes. LÄS MER

  4. 3. New horizons in string theory : bubble babble in search of darkness

    Författare :Suvendu Giri; Ulf Danielsson; Bert Vercnocke; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; String theory; black holes; dark energy; de Sitter; cosmological constant; M-theory; braneworld; anti de Sitter; Theoretical Physics; Teoretisk fysik;

    Sammanfattning : It was discovered nearly two decades ago that we live in an accelerating universe that is dominated by dark energy. Understanding the origin of such an energy has turned out to be a very difficult open question in physics, and calls on the need for a fundamental theory like string theory. LÄS MER

  5. 4. New Efficient Detector for Radiation Therapy Imaging using Gas Electron Multipliers

    Författare :Janina Östling; Mats Danielsson; Anders Brahme; Fabio Sauli; Stockholms universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Portal imaging; Gas Electron Multiplier; Gas detector; Medical engineering; Medicinsk teknik;

    Sammanfattning : Currently film is being replaced by electronic detectors for portal imaging in radiation therapy. This development offers obvious advantages such as on-line quality assurance and digital images that can easily be accessed, processed and communicated. LÄS MER

  7. 5. An Event-Reconstructing Silicon Detector for 1 µm Resolution Spectral Computed Tomography

    Författare :Christel Sundberg; Mats Danielsson; Julia Herzen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; photon-counting; silicon detector; spectral computed tomography; subpixel resolution; dose efficiency; coincidence tracking; event reconstruction; fotonräknande; kiseldetektor; spektral datortomografi; subpixelupplösning; doseffektivitet; koincidensspårning; händelserekonstruktion; Fysik; Physics;

    Sammanfattning : Computed tomography (CT) is a medical imaging modality in which cross-sectional images of the human body are created using x-rays. Commercial CT scanners utilize energy-integrating detectors to measure the x-ray attenuation. However, photon-counting detectors with energy-discriminating abilities have started to emerge. LÄS MER